Brush bristling machine



June 2, 1942. w p- HALL ETAL 2,285,158

BRUSH BRISTLING MACHINE Filed Sept. 5, 1940 2 Sheets-Sheet l wez'wza m 452-1222 41501? Jlerd' 0. Be Jena? 7/. 29m

June 1942- w. P-G. HALL ETAL BRUSH BRISTLING MACHINE Filed Sept. 5, 1940 2 Sheets-Sheet 2 Patented June 2, 1942 UNITED STAT Es" PATENT OFFICE This invention relates in general to a machine for bristling brush blanks. and more particularly to a continuous indexing cam mechanism. for speeding up the operation of the machine.

In the prior art, as exemplified by Patent No. 1,846,141,".a blankholder, containing a plurality of blanks; is reciprocated laterally and longitudi .nally by" means of oams between each single tuft setting operation in one blank, and this blank is thus moved about below a stationaryposition for the vertically 'reciprocable but otherwise stationary tuft setting needle, until all the tufts or knotsof bristles are set. Then theset ting mechanismis stopped, a screw feed connectect with the holder operates during 'cam dwells, and the holder is thus traveled laterally approximately the width of a single blank clamp ing means, so that the nextblank in the holder" maylbemoved into' position to be operated upon.

Such a machine loses the time duringthis feeding of theblanks, when the setting mechanism is idle, and the jarring and vibration resulting from t the stopping and starting of ,thesetting mechanism has a deleterious effect on the entire machine and the product.

The principalobjects of the present invention include the'provision of a brush bristling ma- Fig. 3 is a front elevation, looking'in the direction. of arrow 3 in Fig. .1;

Fig. 4 is a front elevation of the eccentric adjusting means} Fig.5 is a broken away plan View, looking in the direction of arrow 5 in Fig. 4;

Fig; 6 is adetail view of a brake band; 7 Fig.7 is a broken view of a cam wheel; and

8 is anenlarged plan of a brush blank} showing the order'of thes'etting operations.

Referring to the drawings in detail, Illindihates 'a slide which is movable longitudinally ofthemachine in suitable guides, not shown,by

chine which avoids these defects of the prior betweenblanks, so that the vibration and lossof I art; the provision of a mechanism which obviates the necessity of stopping the setting mechanism time incident to the prior art machines is avoidv ed; the provision'of means to feed the blank holder laterally one step between each tuft settingoperatio'n; so thatiwhen a blankhas been bristled, it is only necessary to advance the holdmeans 'of a cam l2. This cam has a cam track [4 which comprises twenty-five angularly equal stations'in which track runs a roller IE on a lever 16 pivoted at 1.8 on a stationary part of the machine]! This leverhas a second roller 20 at its other endgan'cl this roller runs in a trackin a plate 22 adjustably carried as by slot and bolt connection] 24, on a projection 26 which is integral with the longitudinal slide 10. I Slide II] is adapted to be moved transversely of itself bymeans not here shown, but which inay comprise a carriage similar .to that at ll in Pate ent No. 1,846,141.' It is not thought necessary to illustrate this carriage and its .actuating cam means; .as these are clearlyshown in. the same relation in'said patent.

The brush blanks '28 are carried in a series of holders '30 each of. which is provided with a plurality of seats 32 on its upper surfaceshaped to fit the particular brush, andthe bristle holder a fraction of the distance formerly requiredv to put the next blank in setting position; and the provision of a brush bristlingmachine which is faster and smoother in operation than any of the prior art devices. We have referred to the setting operation as a matter of convenience only, i i as the same mechanisms also provide improved results from the drilling operation in the same mannerf f W Q Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which indexing mechanismas applied to e bt e meme ,7 a

i 1 ensn ele atio k n ifiih dim! tion of arrow .2 in Fig. 1; i

ing'parts' of the brushes may be secured in place on the holder by plateY34 orother means' Each holder is provided with gibs 38 arranged longi tudinally of the slide. holder may be provided with a half-nut, similar to that at 18 in- Fig. 33 ofthe aforementioned I patent, to threadedly engage with a screw All which is journaled on the slide as at 42,]A

bracket iii aids in holding the parts in assembled relation. It is to be noted that slide ii) carries, screw 40 with it in all its movements. and as holders 30 are in meshwith the screw, the holder Will also be carried in conformance with slide it];

but in. addition the holder is subject to a longi- 1 i .60 Fig. l is a partial planviewof the continuous V v 'a tooth brush tudinalfeed with relation to slide Iii, due to any turning of the screw 40 The screw shaft is providedwith a gear 44' fixed thereon, and abrake band 46 having a shoe 48 and an adjusting screw '50. Thegear .44 and brake 46 are mounted ,on

an enlarged end of the screw shaft, as shown in Ei -HL h b a isgfvr t e ur e o holding screw 40 against any possible undesired turning On its undersurface each.

means during the operation of the machine.

movement, so as to promote accuracy in the feed.

At the left hand end of slide I0, an integral support 52 extends outwardly, and this support carries a bearing housing 54 for the reception of a shaft 56. This shaft carries a sprocket 58 which is continually rotated by chain 60 or other A circular connector plate 52 is bolted or otherwise secured to one side of the sprocket, and this plate is machined to form a slot 64 for the sliding reception of a lateral support 66 on an eccentric 68, see Figs. 4 and 5. The support 66 is provided with a threaded aperture thru which extends a correspondingly threaded bolt III which is held against longitudinal movement by a plate 69 and a shoulder II on the plate 62. Upon turning the bolt, the support 65 and thus eccentric 68 will be moved radially of the shaft, and the eccentricity of the former is thereby made variable. The assembled eccentric, plate, and sprocket may be held to the shaft by means of a nut I2.

The eccentric 68 is provided with a flange I4 to form a peripheral channel for the holding reception of a strap I6 which is split at'lfijand tapped at the split for adjustable reception of a bolt 80. After adjustment, the bolt may be clamped by a screw 82'. As best shown'in Fig; 2, bolt 80 is pivoted to one arm 84 of a bell-crank, the latter being pivoted on a short stud 86, and the other arm 38 of the bell-crank has a pawl 90 urged by spring 92 towards engagement with teeth 94 on a ratchet 96. The ratchet is fast to a gear'98 on the stud 85', and this gear is in constant mesh with gear M on screw shaft 40.

In the operation of the device,'the sprocket 58 is continuously rotated in exact timed relation to the bristle setting mechanism, and by means of-the pawl and ratchet, the screw shaft 40 is intermittently rotated. The intermittent rotation of the screw occurs between each tuft setting operation, when the needle is elevated, so

that between each knot or tuft placement, the

holder 30 is moved to the right in Fig. 1, one step, with relation to slide I0. The cam' I2, having a plurality of stations, is designated to move slide I and holder 30 with it, to compensate for the screw feeding of the holder on the slide, at each cam station, so that the knots or tufts will be correctly located in their drilled holes. The movements due' to earn I2 and the screw shaft affect the holder 30 only as to longitudinal'movement thereof, i. e., lateralmovement of the brush blanks. The longitudinal movement of theblanks is obtained by a cam not here shown but similarrto cam 65 in Patent blank. Hence, the new blank will now take the starting position of the just bristled blank, and. the bristling operation is repeated on the next revolution of the cam.

In other words, point I04 on cam I2 represents initial placement of the parts, and when the roller I5 is at this location, #I knot or tuft is set. Upon retraction of the setting needle, cam track I4 will actuate lever I6 to move slide I0 and with itholder 30 in a direction to compensate for the forward feed of holder 30 due to screw 40, so as to bring drilled hole #2 into correct position relative to the setting needle. This action continues as the cam rotates, with screw 40 feeding holder 30 between each setting operation, until, at station I02, the holder 30 has been moved relative to slide I0, nearly the distance between brushes, but a further movement is necessary to complete the cycle and bring slide I0 to original No. 1,846,141, which forms no part of the present.

invention. i

As the holder 30 is moved to the right in Fig. 1

- by the screw, and cam I2 compensates for this movement depending on thelocations of the.

knots or tufts, it will be seen that the last knot, #25 -in- Fig. 8, will be set between cam stations I00 and I02 in Fig. 1, and this-knot is at'the 1, which will be seen to beat a relatively sharp angleso as to pivot lever IE thru a greater movement of the holder the distance of a co'mplete'blank. 'I'herefore,'by use of the present device, it'is possibleto set a knot (or drill a hole) between each station on the cam I2, the drills and needles'do not have to be stopped between blanks, and the entire cam is now useful, instead of having four idle stations, as in the prior art.

In thev drawings and description above, the

invention has'been illustrated'in a machine for making a twenty-five knot brush, but'it will be clear that by-changes in the cams and ratchet,

brushes of any desired number of knots may be made. It is only necessary to provide a ratchet having asmany teeth as the brush has knots, in order to feed the holder by the screw between each setting and drilling operation, and to provide the' camsv tions. i I

In any case, it'is to be observed that since eachstation on cam I2 is an'active or useful station; the drilling and setting operations are continuous, from brush to brush and from holder to holder, without any interruptionor stop action. Thus the action of the machine is just as if a single continuous piece'were being operated 'upon as long as the machine runs, the time intervalbetween each drilling or setting operation being equal at all times.

In cases where the spacing of the brushes in the holders is to be changed, it is only necessary to change the ratio of gears 44 and98 to compensate for the variation in the feed in the travel of the holder. I

Having thus described'our invention and. the advantages thereof, we do not wish to be limited t0 the details herein disclosed, otherwise than angle than that used between the knots in a as set forth in the claims, but what we claim is 1. In a bristling machine, the combination of a slide, means to reciprocate said slide in directions transverse to each other, aholder'movably mounted on said slide and adapted to receive a plurality of blanks to be bristled; with means to move said holder in relatively parallel relation to a movement of said slide in one direction with the required number of'sta during each movement of said slide due to said reciprocating means. l

determined cycle in at least two angular directions, anda blank holderon said slide and movably mounted thereongwith me'ansto feed said holder in a single direction relative to said slide directions. I

during the reciprocation of the latterein two i 3. In abristling machine, aslide; means-to re- I I ciprocate said slidein transverse "directions in a predetermined cycle, a movable blank holder,"-' I spaced receiving means on said holder-for a plurality of blanks, and means tojmove said blank holder in parallelrel'ation to e. movement of said slide and simultaneously with the reciprocatory motion of the l'atteru 4. In a bristling machine, the combination of a movable slide, means to reciprocate said slide in at least two transverse directions in, a predetermined cycle, a blank holder on said slide, said holder being mounted for sliding movement; with means mounted on said slide and engaging said holder to regularly and intermittently advance said holder with relation to said slide and in one only of said directions during each movement of the latter.

5. In a bristling machine, the combination of a slide, means to reciprocate said slide in mutually transverse directions a predetermined cycle, a blank holder mounted on said slide for movement therealong in one direction, spaced means on said holder for receiving a plurality of blanks; with means on said slide to intermittently move said holder in relatively parallel relation to said slide during the latters movement, said means being effective to move said holder a distance between blank centers during a substantially complete cycle of saidslidei' 6. In a bristling machine, the combination of a s1ide, a holder adapted to receive a plurality of blanks to be bristled, said holder being mounted on said slide for movement with relation thereto, a cam for moving said slide, and a screw shaft mounted on said slide for movementtherewith and threadedly engaging said holder; with means to intermittently rotate said screw to move said holder relative to said slide during and parallel to the movement of said slide by said cams 7. In a bristling'rnachine, the combination of ,a slide, a blank holder movably mounted on said slide, and means to reciprocate said slide in a predetermined cycle with a screw shaft on said slide and engaging said holder, and means on said slide and movable therewith to intermittently rotate said screw, said means being efiective to rotate said screw and thereby advance said holder during thereciprocatory movement of said slide.

8. In a bristling machine, the combination of a slide, a blank holder on said slide, means on the latter movably mounting said holder, a cam having a connection with said slide, said cam being effective to reciprocate said slide in generally irregular steps in cycles; with means to intermittently and regularly move said holder in one direction ,on said slide in steps, the movements of said slide and said holder being substantially simultaneous.

9. In a bristling machine, the combination of a slide, said slide being adapted to movably mount a blank holder, and means to substantially continuously reciprocate said slide; with means to feed said holder along'and generally parallel to the movement of said slide,said meanscom= prising a screw shaft, a ratchet operatively connected thereto, a member-adapted to be continually rotated and mounting a pawl, and said pawl and ratchetbeing in operative relation, whereby said holder may befed along saidslide in steps.

10. In a brush bristling machine,-a support,

a slide onsaid support,driving means on said slide, brush blank holders adapted to engage said means, means for moving said slide, and means effective to intermittently operate said driving means so that said holders are each moved in equal increments along said slide in one direction between each single bristling operation and slide on said support, a screw mounted to rotate on said slide, a ratchet to operate said screw intermittently, brush blank holders adapted to engage said screw, continuous means. to operate bination of a. slide, and means to move said slide said ratchet so that said holders intermittently advance with relation to said slide, a cam adapted slide thru a cycle including movements in direction mutually transverse; with a brush holder on said slide, said holder being movable relative said slide in one direction only, and means effective to move said holder step by step along the slide in said last named direction, said means being selectively interchangeable to provide a variant degree of travel in thesteps.

13. In a device of the class described, the comthru a cycle; with a driving means on said slide, gear means to intermittently operate said driving means, a holder engaged with driving means so as to be movable step by step on and parallel to a motion of said slide, a plurality of spaced brushes 7 repeatedly in a cycle, said means comprising a cam track having a series of stations; with a driving means on said slide, a holder engaged by said driving means, means to intermittently operate said driving means to travel said holder step by step along and generally parallel to a motion of said slide, saidoperating means hav ing actuating elements corresponding in number to the stations in the cam track, andsaid driv-.

ing means and cam being selectively interchangeable with a driving means and cam having different but still corresponding numbers of actuating elements and stations respectively.

15. In a device of the class described, the combination of a slide and means to move said slide repeatedly in a cycle; with aholder on said Jslide, means effective to travel said holder along 16. In a machine of the class described, an element adapted to be moved in at least two transverse directions, a brush blank holder slidably mounted on said element, and means to move said holder along said slide in one of said directions, said means being operative to move said holder during each movement of said slide in either direction.

17. In a machine of the class described, an element adapted to be moved in transverse directions, a brush blank holder mounted on said element for movement therealong in one direction, and means to move said holder in said one direction during each movement of said element in either direction.

18. In a brush boring and setting machine, the combination of a slide, means to reciprocate said slide in at least two transverse directions, and

a blank holder movably mounted thereon; with means to move said holder step by step in a direction parallel to one direction of movement of said slide between each boring or setting operation.

19. In a machine of the class described, a slide adapted for reciprocation in at least two transverse directions, a brush holder mounted on said slide for movement therealong in one direction of said reciprocation, means to move said'holder simultaneously with the movements of said slide, the movements of the slide thereby modifying the distances traveled by said holder with relation to a fixed point.

WILLIAM PENN-GASKILL HALL. EARL R. PERSON. ALBERT O. BELL. LEROY W. VINAL. 

